Hello everyone:
I am currently doing research on motor control using the EEG/ERP as a
primary data source. Recently I've found a 2.0 Hz oscillation from
leads over the motor cortices (bilateral) which shows changes in
magnitude as a function of the velocity of an upcoming movement. In
other words these changes occur in the EEG before the onset of
muscular activity. Furthermore, these changes display magnitude
changes over the hemisphere contralateral to the side of movement.
I am aware of all the research looking at the "Bereitschaftspotential"
(readiness potential), but I have not been able to find any
correspondence to the 2.0 Hz phenomenon on other levels. For instance
there is much research linking effects similar to the
Bereitschaftspotential to single cell firing patterns in the motor
cortex of non-human primates. Also, there has been work in the
frequency domain where slower oscillations were found (ie 0.5 Hz).
Is there anyone out there who has seen or done work on the single cell
level or even using local field measurements who has also seen a
similar 2.0 Hz effect? Of particular interest would be prior to or
during a controlled motor event..
Thanks in advance..
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Gene V. Wallenstein
Center for Complex Systems and Brain Sciences
Florida Atlantic University, Boca Raton, FL. 33431 USA
Wallenstein at Walt.ccs.fau.edu